What gives bootstrap a small indent?

Question

css

Good afternoon, tell me, please.
What gives this indent?

Link to the site: tyts
upd: look at a width of no more than 900px.

Answer 1

.navbar-header, .navbar-nav {
    vertical-align: top;
}

Indentation appears due to the specifics of inline blocks.

Answer 2

There is something really wrong there. But if I understand correctly, this indent appears from the indents of the child elements of the .topbar block